<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .box {
            width: 200px;
            height: 200px;
            background-color: rgba(0,0,0,0.1);
        }
        .box2{

            width: 500px;
            height: 500px;
            background-color: #000000;

            filter: alpha(opacity=10);
            opacity: 0.1;
        }
    </style>
</head>
<body>
<div class="box">
aaaa
</div>
<div class="box2">
aaaa
    <img src="image/mn.jpg">
</div>
<div></div>
</body>
</html>